package tree;

/**
 * @author way
 * @create 2025-02-13 11:54
 */
public class _617_mergeTrees {
    public TreeNode mergeTrees(TreeNode root1, TreeNode root2) {
        if (root1 == null) return root2;
        if (root2 == null) return root1;

        TreeNode root = new TreeNode();
        root.val = root1.val + root2.val;
        root.left = mergeTrees(root1.left, root2.left);
        root.right = mergeTrees(root1.right, root2.right);
        return root;
    }
}
